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After I upgrade linux kernel, my screen flickers all the time and I could not find the problem.
Output of `uname -a` is `Linux 4.6.2-1-ARCH #1 SMP PREEMPT x86_64 GNU/Linux` and I have two graphic card so I use bumblebee to manage them. But I don't think it is related to bumblebee.
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Do you get anything in the journal or xorg logs.
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I find no difference between current xorg.log files and these files before upgrading.
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I have the same issue, and we are not the only ones
https://bugs.freedesktop.org/show_bug.cgi?id=95176
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